What role do stomata play in plant life? What is the difference between root crops and root tubers?

What role do stomata play in plant life? What is the difference between root crops and root tubers? Prove that the lily of the valley rhizome is a modified shoot. Why does potato yield increase after hilling? What is the purpose of pinching the main root of some cultivated plants?

Stoma – the formation in the leaves of a plant, through which there is an exchange of gases with the atmosphere;

Root crop – modification of the main root, and root tubers – adventitious and lateral roots;

There are buds on the shoot – the beginning of new shoots, aerial shoots grow annually from the rhizome of the lily of the valley;

When hilling, the root system grows, more water is absorbed from the soil and photosynthesis is enhanced, more tubers are formed.

Pinching the main root increases the growth of the plant’s root system.